EP1156224A2 - Zweiflütiger Lüfter - Google Patents

Zweiflütiger Lüfter Download PDF

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Publication number
EP1156224A2
EP1156224A2 EP00830825A EP00830825A EP1156224A2 EP 1156224 A2 EP1156224 A2 EP 1156224A2 EP 00830825 A EP00830825 A EP 00830825A EP 00830825 A EP00830825 A EP 00830825A EP 1156224 A2 EP1156224 A2 EP 1156224A2
Authority
EP
European Patent Office
Prior art keywords
wheel
blades
opening
scroll
aspirating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00830825A
Other languages
English (en)
French (fr)
Other versions
EP1156224A3 (de
Inventor
Ignazio Giacalone
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faber SpA
Original Assignee
Faber SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Faber SpA filed Critical Faber SpA
Publication of EP1156224A2 publication Critical patent/EP1156224A2/de
Publication of EP1156224A3 publication Critical patent/EP1156224A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F04D29/424—Double entry casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

Definitions

  • the present patent application for industrial invention relates to a high-efficiency low-noise electrical aspirating fan unit obtained thanks to the innovative design of its constructive elements.
  • the unit according to the present invention is normally used in modern hoods installed over kitchen cookers. More precisely, it comprises a centrifugal wheel, provided with two parallel series of blades, housed inside a scroll with two parallel diffusing ducts, one for each series of blades.
  • the scroll has two opposed circular aspirating openings closed with two grilles, of which one features a reinforced central plate supporting the electrical motor used to drive the wheel.
  • the scroll has a single delivery opening where the two diffusing ducts end.
  • the purpose of the present invention is to improve the efficiency of this type of electrical aspirating fan units by simply modifying the design of their constructive elements in order to minimise aerodynamic load losses.
  • the aspirating fan unit according to the present invention has an annular separator between the two diffusing ducts of the scroll, in order to avoid any interference between the two air flows entering the two aspirating openings of the scroll in opposite direction.
  • the external edge of the wheel blades has been redesigned in order to follow the internal profile of the diffusing ducts, while the wheel hub has been redesigned in order to improve its aerodynamic profile.
  • the grilles used to close the aspirating openings have been provided with inclined partitions capable of offering the minimum impact surface possible to the air flows aspirated by the wheel.
  • the electrical aspirating fan unit comprises a centrifugal wheel (1) provided with two parallel series of blades (1a), housed in a scroll (2) with two parallel diffusing ducts (3), one for each series of blades (1a).
  • the scroll (2) has two opposed circular aspirating openings (4 and 5) closed with two grilles (6 and 7), of which one (6) features a reinforced central plate (6a) supporting the electrical motor (8) used to drive the wheel (1).
  • the scroll (2) has a single delivery opening (9) where the two diffusing ducts end.
  • annular separator (10) is located between the two diffusing ducts (3) of the scroll (2), in order to avoid any interference between the two air flows entering the two aspirating openings (4 and 5) of the scroll (2) in opposite directions.
  • the annular separator (10) has a variable height, since its internal circumference (10a) must circumscribe the external circumference of the wheel (1) closely, in order to avoid that, after passing by the wheel (1), the air flow aspirated through the opening (4) interferes with the air flow aspirated through the opening (5) and vice versa.
  • the external edge (1b) of the blades (1a) of the wheel (1) has been designed in order to follow the internal profile of the diffusing ducts (3) so that the distance between the internal wall (3a) of the ducts (3) and the external edge (1b) of the blades (1a) remains constant in each axial section of the unit.
  • the hub (1c) of the wheel (1) is aerodynamically designed on the side facing the grille (7), so that the air aspirated through the opening (5) is guided and conveyed towards the opening of the blades (1a) of the wheel.
  • the radial partitions of the grilles (6 and 7) have been especially designed, being formed by a concentric series of rings (11) crossed by radial partitions (12), with suitable inclination in order to avoid the abrupt impact of the air aspirated through the grilles.
  • radial planes are situated on planes passing by the rotation axis of the wheel.
  • the radial partitions (12) were given an inclination close to the value of this direction, so that the partitions do not represent the first obstacle along the route of the aspirated air flow which would cause the first load loss for the air flow through the electrical aspirating fan unit.
  • the planes (13) feature an inclination angle ( ⁇ ) with respect to the section of the delivery opening (9), as well as an inclination angle ( ⁇ ) with respect to the symmetrical axis A-A of the scroll (2).
  • the inclined planes (13) can intercept the air flow passing through the delivery opening (9) and fractionate the intensity of the acoustic wave, thus considerably reducing the noise level compared to the traditional electrical aspirating fan units of known type.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP00830825A 2000-05-11 2000-12-15 Zweiflütiger Lüfter Withdrawn EP1156224A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITAN000012U 2000-05-11
IT2000AN000012 IT250953Y1 (it) 2000-05-11 2000-05-11 Convogliatore aria applicabile anche per elettrodomestici cappe dacucina in plastica o metallo alimentato da motore elettrico

Publications (2)

Publication Number Publication Date
EP1156224A2 true EP1156224A2 (de) 2001-11-21
EP1156224A3 EP1156224A3 (de) 2003-02-12

Family

ID=11437210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00830825A Withdrawn EP1156224A3 (de) 2000-05-11 2000-12-15 Zweiflütiger Lüfter

Country Status (2)

Country Link
EP (1) EP1156224A3 (de)
IT (1) IT250953Y1 (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2338581A1 (de) * 2009-12-22 2011-06-29 ebm-papst Mulfingen GmbH & Co. KG Lüftereinheit für Filterlüfter
EP2365224A1 (de) * 2010-03-11 2011-09-14 Elica S.p.A. Radialer Förderer für Absaughaube
WO2012135835A3 (en) * 2011-04-01 2013-03-14 Envision Strategies Group, Inc. Method and apparatus for independently varying airflow and noise generation of a fan
CN103512068A (zh) * 2013-09-22 2014-01-15 陈长春 抽油烟机单壳六风轮涡轮总成
CN105626580A (zh) * 2014-11-03 2016-06-01 博西华电器（江苏）有限公司 盛装吸油烟机的多翼式离心叶轮的壳体、风机及吸油烟机
CN105626555A (zh) * 2016-03-29 2016-06-01 海信（山东）空调有限公司 一种双吸离心风机及空气净化器
CN106111565A (zh) * 2016-06-22 2016-11-16 卢光强 碟形风扇罩清洁装置
EP3135918A1 (de) * 2015-08-26 2017-03-01 Lg Electronics Inc. Zentrifugalgebläse
EP3193022A1 (de) * 2016-01-13 2017-07-19 Silverline Endüstri ve Ticaret Anonim Sirketi Zentrifugaler lüfter
CN110242604A (zh) * 2018-03-08 2019-09-17 台达电子工业股份有限公司 送风装置
WO2020202420A1 (ja) * 2019-04-01 2020-10-08 三菱電機株式会社 遠心送風機、送風装置、空気調和装置及び冷凍サイクル装置
JP2021099073A (ja) * 2019-12-23 2021-07-01 日立ジョンソンコントロールズ空調株式会社 多翼ファン
IT202000028328A1 (it) * 2020-11-25 2022-05-25 Faber Spa "ventilatore perfezionato per cappa aspirante per piani di cottura"
EP4136355A4 (de) * 2020-04-15 2024-01-10 Femas Metal San. Ve Tic. A.S. Gehäuse für den radiallüfter einer dunstabzugshaube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841300A (ja) * 1981-09-04 1983-03-10 Matsushita Electric Ind Co Ltd 両吸込み形多翼送風機
US5118252A (en) * 1990-05-24 1992-06-02 The W. B. Marvin Manufacturing Company Intake grill for electric fan assembly
DE9305478U1 (de) * 1993-04-10 1993-06-17 Gebhardt Ventilatoren GmbH & Co, 7112 Waldenburg Radialventilator mit rückwärts gekrümmten, profilierten Schaufeln
IT232118Y1 (it) * 1996-12-06 1999-09-10 Bacchiocchi Alberto Gruppo di aspirazione a doppia coclea per cappe, forni e simili
DE19841762C2 (de) * 1998-09-11 2002-07-18 Ebm Werke Gmbh & Co Kg Gebläsegehäuse und Radialgebläse

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8821129B2 (en) 2009-12-22 2014-09-02 Ebm-Papst Mulfingen Gmbh & Co. Kg Fan unit for filter fans
EP2338581A1 (de) * 2009-12-22 2011-06-29 ebm-papst Mulfingen GmbH & Co. KG Lüftereinheit für Filterlüfter
EP2365224A1 (de) * 2010-03-11 2011-09-14 Elica S.p.A. Radialer Förderer für Absaughaube
US10100846B2 (en) 2011-04-01 2018-10-16 Envision Strategy Group, Inc. Method and apparatus for independently varying airflow and noise generation of a fan
WO2012135835A3 (en) * 2011-04-01 2013-03-14 Envision Strategies Group, Inc. Method and apparatus for independently varying airflow and noise generation of a fan
CN103512068A (zh) * 2013-09-22 2014-01-15 陈长春 抽油烟机单壳六风轮涡轮总成
CN103512068B (zh) * 2013-09-22 2015-12-09 陈长春 抽油烟机单壳六风轮涡轮总成
CN105626580A (zh) * 2014-11-03 2016-06-01 博西华电器（江苏）有限公司 盛装吸油烟机的多翼式离心叶轮的壳体、风机及吸油烟机
EP3135918A1 (de) * 2015-08-26 2017-03-01 Lg Electronics Inc. Zentrifugalgebläse
CN106481574A (zh) * 2015-08-26 2017-03-08 Lg电子株式会社 离心式风机和包括其的空调机
US10132328B2 (en) 2015-08-26 2018-11-20 Lg Electronics Inc. Centrifugal fan
EP3193022A1 (de) * 2016-01-13 2017-07-19 Silverline Endüstri ve Ticaret Anonim Sirketi Zentrifugaler lüfter
CN105626555A (zh) * 2016-03-29 2016-06-01 海信（山东）空调有限公司 一种双吸离心风机及空气净化器
CN106111565A (zh) * 2016-06-22 2016-11-16 卢光强 碟形风扇罩清洁装置
CN110242604A (zh) * 2018-03-08 2019-09-17 台达电子工业股份有限公司 送风装置
JPWO2020202420A1 (ja) * 2019-04-01 2021-10-14 三菱電機株式会社 遠心送風機、送風装置、空気調和装置及び冷凍サイクル装置
WO2020202420A1 (ja) * 2019-04-01 2020-10-08 三菱電機株式会社 遠心送風機、送風装置、空気調和装置及び冷凍サイクル装置
JP7031061B2 (ja) 2019-04-01 2022-03-07 三菱電機株式会社 遠心送風機、送風装置、空気調和装置及び冷凍サイクル装置
JP2021099073A (ja) * 2019-12-23 2021-07-01 日立ジョンソンコントロールズ空調株式会社 多翼ファン
CN113090560A (zh) * 2019-12-23 2021-07-09 日立江森自控空调有限公司 多叶片风扇
CN113090560B (zh) * 2019-12-23 2023-02-03 日立江森自控空调有限公司 多叶片风扇
EP4136355A4 (de) * 2020-04-15 2024-01-10 Femas Metal San. Ve Tic. A.S. Gehäuse für den radiallüfter einer dunstabzugshaube
IT202000028328A1 (it) * 2020-11-25 2022-05-25 Faber Spa "ventilatore perfezionato per cappa aspirante per piani di cottura"
WO2022112408A1 (en) 2020-11-25 2022-06-02 Faber S.P.A. Improved fan assembly for extractor hood for hobs
US12345422B2 (en) 2020-11-25 2025-07-01 Faber S.P.A. Fan assembly for extractor hood for hobs

Also Published As

Publication number Publication date
EP1156224A3 (de) 2003-02-12
ITAN20000012U1 (it) 2000-08-11
IT250953Y1 (it) 2003-10-22

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